Building pile



L. PIERCE BUILDING FILE Oct. 11, 1927.

Filed June 1927 ILEE i INVENIOR M; ATTORNEY Patented Oct. 11, 1927.

PATENT OFFICE.

LEON PIERCE, on NEW YORK, n. Y.

BUILDING PILE.

Application filed June 2,

The main object of this invention is to provide a novel type of pileused in constructing the foundations of buildings, and coir sists ofthree sections, a soil penetrator nose,

a hole forming sleeve and a series of inner shells, open at both endsinto which the cement is poured after the outer hole forming sleeve hasbeen removed or salvaged.

Another object of this invention is to provide a pile used in theconstruction of all kinds of buildings which consists of three sections,a penetrator nose, and an inner and outer shell, the inner shell beingcomposed of sections which are adapted to be filled with concrete whilethe outer shell is adapted to be extracted and salvaged.

The above and other objects willbecome apparent in the description belowin which characters of reference refer to like-named parts in thedrawing.

Referring briefly to the drawing, Figure 1 is a longitudinal sectionalelevational view of the pile showing the same in its entirety.

Figure 2 is a reduced front elevational i view'showing the pile beingsunk into the ground with the aid of a steam hammer.

Figure 3 is a longitudinal sectional elevational View of the pilesimilar to Figure 1 but showing the out-er sleeve partly ex tracted.

Figure 1 is a cross sectional view of the pile, the section being takenon line t4 of Figure 1.

Referring in detail to the drawing, the numeral 10 indicates a conicaltapering penetrator nose which is of substantial construction so that itmay withstand fracture when coming into contact with stone or othersimilar hard substance found in the soil. This nose is of hollowconstruction having an inverted conical chamber 11. A rib 12 extendsupwardly and diametrically from the apex of the chamber and this rib isprovided with an opening 13 which passes entirely thru it from one sideto the other. The tip of the nose always hangs in suspended position andis. the first to enter or pierce the soil. The upper open portion of thenose is encircled by a flat shoulder 14 which is surmounted by aninternal annular rim 15.

The lower end of an outer shell 16 is seated on the shoulder 14 incontact with the rim,

15 which latter serves as a positioning member for the outer shell. Thisshell is of the same length as the distance the pile is to be sunk andis formed of a unitary piece of ma- 1927. Serial No. 195,896.

terial of seamless construction. The upper end of the outer shell isprovided with a plurality of openings 17 into which tackle is in sertedwhen the shell is to be extracted from the well it has formed.

A plurality of hollow sleeves 18 open at both ends, and of a dimensionsmaller than the outer shell are slippedinto the outer shell after thelatter has been sunk to the desired position. The lower ends 20 of thesesleeves are formed with a reduced diameter so that the reduced end ofone sleeve telescopes partly into the larger end of the sleeve above it.Each sleeve is provided with a series of perforations 19 which areprovided at spaced apart positions around the circumference thereof.

The opening 13 on the rib 12 of the penetrator nose receives the lowerlooped end 24 of a tie rod 21. The tie rod extends axially upward withinthe sleeves and projects from the upper end of the uppermost sleeve, andthe end of the tie rod projecting therefrom is threaded and is adaptedtobe engaged by a pair of nuts 23. The latter retain an annular faceplate 22 in position on the uppermost sleeve. This face plate has anaxial opening therein in which the upper end of the tie rod registers.

The construction of the pile is such that the outer shell 16 is salvagedand may be used over and over again until it is worn out or damaged. Theouter shell 16 and the nose 10 are secured to each other thru a frictionfit, the nose hanging suspended as shown in Figure 2 from the outershell. This shell and nose are guided into position between the leads 25of a pile driver. In sinking the pile a steam hammer 26 is seated on theupper end of the outer shell 16 and operation of the hammer causes thenose to penetrate the soil and thereby sink the nose and the outer shellto the desired depth. Before the outer shell 16 is withdrawn from, thewell which has been formed by the nose, the sleeve sec tions 18 areinserted into the outer shell one after the adjacent one by slipping thelower reduced end of one section into the larger end of the next lowestsection. The sleeves are very apt to cling to the outer shell surfaceand thereby be raised with the' outer shell as the latter is beingextracted from the well. To prevent the sleeves from being removed fromthe interior of the outer shell, the face plate 22 is seemed in place bypassing the upper end of the tie rod, which is threaded, thru the axialopening provided in the face plate and then securing the nuts 23 inplace in the manner illustrated in Figure 1. After the outer shell 16has been extracted from the well an annular void exists between theouter surface of the sleeve sections and the surface of the well. Afterpartly or wholly removing the face plate from the uppermost sleeve,cement is dumped into the sleeve'until the pile form has been filledwith cement which is poured in thru the uppermost sleeve situated at theupper end of the construction. The cement seeps thru the perforations 19which are formed near the upper end of each sleeve section and thatcement which passes thru these perforations drops into the space betweenthe sleeves and the wall of the well and fills this void so that bothsides of the sleeves will be covered by a coating of cement.

It is to be noted that certain changes in form and construction may bemade without departing from the spirit and scope of the invention.

I claim:

1. In a building pile, a conical hollow nose, an outer removable shellseated on said nose, sleeves in said shell slipping end to end one intothe other, and means engaging said nose and the uppermost sleeve forsecuring the sleeves in place while extracting said shell.

2. In a building pile, a conical hollow nose having its apex insuspended position, an outer removable shell seated on said nose andfrictionally secured thereto, a plurality of sleeves open at both endssecured to each other end to end, the lowermost sleeve seating on thenose, and means engaging the nose and the uppermost sleeve for retainingthe sleeves in arranged formation while'the shell is being removed.

3. In a building pile, a conical hollow nose having a shoulder thereon,an internal encircling rim on said nose, an outer shell having its lowerend seated on said shoulder in contact with the encircling rim, aplurality of sleeves connected end to end adapted to he slipped intosaid shell after the ground has been pierced, the lowermost sleeveseating on the rim of said nose, said 'nose having a diametral ribformed therein, said rib having an opening, and means engaging in theopening in the rib and the uppermost sleeve for securely retaining thesleeves intact with the nose while the outer sleeve is being extracted.

4. In a building pile, a conical hollow nose having a shoulder thereon,an internal encircling rim on said nose, an outer shell having its lowerend seated on said shoulder and in contact with the encircling rim, arib extending upwardly in said nose having an opening therein, aplurality of sleeves secured to each other end to end and havingperforations therein, the lowermost sleeve being seated on the rim ofsaid nose, a face plate seated on the uppermost sleeve, a tie rodengaged in the opening of said rib extending axially upward having athreaded upper end, and nuts engaging the threaded end for securing theface plate in seated position on the uppermost sleeve to retain thesleeves mounted on the nose.

In testimony whereof I affix my signature.

LEON PIERCE.

